The package xxl.core combines the core functionality of our library. Applications can be found in the
main-methods of the classes and more advanced ones are distributed within the package xxl.applications.
Functionality that relies on foreign libraries is provided in the package xxl.connectivity.
In order to get used with the library, we recommend to study the packages xxl.core.cursors, xxl.core.functions
and xxl.core.predicates first. For a more detailed description of the functionality combined within the packages,
we refer to their documentation.